Delayed-type hypersensitivity test for assessing tick-immune status of cattle in Zambia
| Autor: | M G Varma, A J Wilsmore, P K Trinder, R. G. Pegram, R. Smith, A Heller-Haupt, E. T. Mwase |
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| Rok vydání: | 1989 |
| Předmět: |
Veterinary medicine
Immune status General Veterinary biology Adult female fungi Cattle Diseases Zambia General Medicine Tick biology.organism_classification Tick Infestations Rhipicephalus Immunity Active Ticks Antigen Immunity parasitic diseases Immunology Animals Cattle Hypersensitivity Delayed Antigens Amblyomma variegatum Hypersensitivity test |
| Zdroj: | The Veterinary record. 124(22) |
| ISSN: | 0042-4900 |
| Popis: | Delayed-type hypersensitivity skin reactions were used to assess the tick resistance status of Tonga calves in Zambia. The antigen used in the tests was a homogenate of unfed nymphal Rhipicephalus appendiculatus which had been shown to give protective immunity in guinea pigs to adult female R appendiculatus. There was a significant negative correlation between the intensity of the reactions and the total number of ticks (Amblyomma variegatum, R appendiculatus, Hyalomma truncatum, Boophilus decoloratus and Rhipicephalus species) on the animals. |
| Databáze: | OpenAIRE |
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